All tetrapods descended from a common ancestor that just happened to have limbs with five digits. And over the eons of evolution following that, natural selection worked with variations on ...

If you took a progressive view, you might assume that tetrapods lost their rays during the course of evolution. In reality, however, the common ancestor of both tetrapods and goldfish lacked rays ...

Transitional fossils help scientists bridge gaps in the tree of life, resulting in a picture of gradual evolution over millions of years.

wonders if similar patterns exist in other tetrapod lineages (think amphibians or reptiles). Exploring this could reveal ...

The research, published in the journal Earth-Science Reviews, provides a detailed reconstruction of the Triassic terrestrial ...

New research from the State Museum of Natural History Stuttgart reconstructs Triassic terrestrial ecosystems using fossils ...

Sitting on top of a granite base are numerous concrete tetrapods weighing more than two tons each. They are placed carefully in position and locked with each other to create a formidable structure.